/*
Copyright (c) 2013 Mihail Volkov

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

#ifndef HTMD_WINSOCK_H_INCLUDED
#define HTMD_WINSOCK_H_INCLUDED

#undef UNICODE
#define WIN32_LEAN_AND_MEAN

#include <winsock2.h>
#include <ws2tcpip.h>
#include <windows.h>
#include "htmd.h"

#ifndef DISABLE_HTMD

/// @brief Winsock implementation of HtMdConnection. Implicitly implies that
/// the console will run on the same machine and will use 127.0.0.1 (but may
/// as well use other address via which the device is accessible). Use for
/// locally handled projects on Mustdie desktop.
class HtMdConnection_WinsockLocal: public HtMdConnection
{
	CRITICAL_SECTION mLockCS;
	WSADATA mWsaData;
	int mWsaError;
	SOCKET mListenSocket,mClientSocket;
    struct addrinfo *mpAddrInfo;
    ConnectionState mConnState;
    std::string mPrompt;

    // successfully completed init stages
    enum InitStage
    {
    	IS_NONE,
    	IS_WSA_STARTUP,
    	IS_GETADDR,
    	IS_CREATESOCKET,
    	IS_SETUPSOCKET,
    	IS_LISTEN,
    	IS_ALL_OK
    } mInitStage;

    void doDeinit ();

public:
	HtMdConnection_WinsockLocal (const std::string &tcpPort);
	~HtMdConnection_WinsockLocal ();
	/// @brief Return true if successfully open and can be operated further
	bool isOpenOk () const;
	/// @brief Return winsock error code if not isOpenOk
	int getWinsockError () const { return mWsaError; }

	std::string getConnectionUserPrompt ();
	ConnectionState getState ();
	void pollForInboundConnection ();
	void closeInboundConnection ();
	int tryRead (HtMdChunkDesc);
	int tryWrite (const HtMdConstChunkDesc &);
	bool tryRecursiveLock ();
	void recursiveLock ();
	void recursiveUnlock ();
};

#endif // DISABLE_HTMD

#endif // HTMD_WINSOCK_H_INCLUDED
